①7
| ②
| ③2.5×0.125×80×4. |
| 5 |
| 6 |
| 9 |
| 10 |
| 1 |
| 6 |
| 1 |
| 10 |
=(7
| 5 |
| 6 |
| 1 |
| 6 |
| 9 |
| 10 |
| 1 |
| 10 |
=10+10,
=20;
(2)
| 8 |
| 13 |
| 1 |
| 7 |
| 6 |
| 13 |
=
| 8 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 6 |
| 13 |
=
| 1 |
| 7 |
| 8 |
| 13 |
| 6 |
| 13 |
=
| 1 |
| 7 |
| 14 |
| 13 |
=
| 2 |
| 13 |
(3)2.5×0.125×80×4,
=(2.5×4)×(0.125×80),
=10×10,
=100.
编辑:chaxungu时间:2026-04-27 13:18:15分类:小学数学题库
①7
| ②
| ③2.5×0.125×80×4. |
| 5 |
| 6 |
| 9 |
| 10 |
| 1 |
| 6 |
| 1 |
| 10 |
| 5 |
| 6 |
| 1 |
| 6 |
| 9 |
| 10 |
| 1 |
| 10 |
| 8 |
| 13 |
| 1 |
| 7 |
| 6 |
| 13 |
| 8 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 6 |
| 13 |
| 1 |
| 7 |
| 8 |
| 13 |
| 6 |
| 13 |
| 1 |
| 7 |
| 14 |
| 13 |
| 2 |
| 13 |